Type of Chemical Reactions

Tyler Baggett

Synthesis

  • Definition- A reaction between two or more substances react to form a single substances


  • Equation- A + B ----> AB


  • Examples- Carbonic acid, as in soft drinks, decomposes when it is formed. NH4OH(aq) → NH3(g) + H2O(l)
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Decomposition

  • Example- A reaction in which a compound breaks down into two or more simpler substances


  • Equation- AB ----> A + B


  • Examples- Making cement. CaCO3 + (heat) --> CaO + CO2
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Single Replacement

  • Definition- A reaction in which one element takes the place of another element in a compound.


  • Equation- A + BC ----> B + AC


  • Examples- Baking soda reacts with acidic substances in cake batter. NaHCO3 + HA --> Na A + H(HCO3)
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Double Replacement

  • Definition- Two different compounds exchange positive ions to form two new compounds.


  • Equation- AB + CD ----> AD + CB


  • Examples- Marble statues attacked by acid rain. CaCO3 + 2HNO3 ----> Ca(NO3)2 + H2O + CO2
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Combustion

  • Definition- A substance reacts rapidly with oxygen, often producing heat and light.


  • Equation- CH4 + 2O2 ----> CO2 + 2H2O


  • Examples- Burning some coal. C + O2 --> CO2
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